scsi: mpt3sas: Fix for block device of raid exists even after deleting raid disk
authorSreekanth Reddy <sreekanth.reddy@broadcom.com>
Fri, 28 Oct 2016 04:39:12 +0000 (10:09 +0530)
committerMartin K. Petersen <martin.petersen@oracle.com>
Tue, 1 Nov 2016 17:31:22 +0000 (13:31 -0400)
commit6d3a56ed098566bc83d6c2afa74b4199c12ea074
tree9521099c878b861cdf965a6bae0c48dbe9ab00e3
parent1fdd14279eab2e9f79745631379f0c53cb8f9a5a
scsi: mpt3sas: Fix for block device of raid exists even after deleting raid disk

While merging mpt3sas & mpt2sas code, we added the is_warpdrive check
condition on the wrong line

---------------------------------------------------------------------------
 scsih_target_alloc(struct scsi_target *starget)
                        sas_target_priv_data->handle = raid_device->handle;
                        sas_target_priv_data->sas_address = raid_device->wwid;
                        sas_target_priv_data->flags |= MPT_TARGET_FLAGS_VOLUME;
-                       raid_device->starget = starget;
+                       sas_target_priv_data->raid_device = raid_device;
+                       if (ioc->is_warpdrive)
+                               raid_device->starget = starget;
                }
                spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
                return 0;
------------------------------------------------------------------------------

That check should be for the line sas_target_priv_data->raid_device =
raid_device;

Due to above hunk, we are not initializing raid_device's starget for
raid volumes, and so during raid disk deletion driver is not calling
scsi_remove_target() API as driver observes starget field of
raid_device's structure as NULL.

Signed-off-by: Sreekanth Reddy <Sreekanth.Reddy@broadcom.com>
Cc: <stable@vger.kernel.org> # v4.4+
Fixes: 7786ab6aff9 ("mpt3sas: Ported WarpDrive product SSS6200 support")
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
drivers/scsi/mpt3sas/mpt3sas_scsih.c